Mystic Lake Weather Records (USC00245961)
Record envelope, standing records and threshold days for Mystic Lake (USC00245961), Montana, United States, with 103 years of record.
Key Facts for Mystic Lake
- Mystic Lake (USC00245961) is a weather station in Montana, United States at 45.24 latitude and -109.73 longitude, 1,995 m (6,544 ft) above sea level.
- The station reports from 1924 to 2026, 103 years of record.
- 1,464 records set at Mystic Lake still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Mystic Lake set a daily record high maximum temperature of 25.0 C (77.0 F) on 6 October 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Montana, United States, 45.24 latitude, -109.73 longitude.
- Elevation: 1,995 m (6,544 ft).
- Period of record: 1924 to 2026, 103 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
15 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 15.6 C (60.1 F) | -37.2 C (-35.0 F) | 13.3 C (55.9 F) | -21.1 C (-6.0 F) |
| Feb | 16.7 C (62.1 F) | -38.9 C (-38.0 F) | 15.0 C (59.0 F) | -19.4 C (-2.9 F) |
| Mar | 18.9 C (66.0 F) | -30.6 C (-23.1 F) | 18.9 C (66.0 F) | -13.9 C (7.0 F) |
| Apr | 26.7 C (80.1 F) | -25.0 C (-13.0 F) | 20.0 C (68.0 F) | -7.8 C (18.0 F) |
| May | 28.3 C (82.9 F) | -17.2 C (1.0 F) | 26.1 C (79.0 F) | -6.1 C (21.0 F) |
| Jun | 32.8 C (91.0 F) | -6.1 C (21.0 F) | 26.1 C (79.0 F) | 1.7 C (35.1 F) |
| Jul | 35.0 C (95.0 F) | -1.7 C (28.9 F) | 35.0 C (95.0 F) | 8.3 C (46.9 F) |
| Aug | 33.3 C (91.9 F) | -1.7 C (28.9 F) | 32.2 C (90.0 F) | 4.4 C (39.9 F) |
| Sep | 31.1 C (88.0 F) | -15.0 C (5.0 F) | 25.0 C (77.0 F) | 1.7 C (35.1 F) |
| Oct | 26.7 C (80.1 F) | -22.2 C (-8.0 F) | 25.0 C (77.0 F) | -4.4 C (24.1 F) |
| Nov | 20.0 C (68.0 F) | -31.1 C (-24.0 F) | n/a | n/a |
| Dec | 16.7 C (62.1 F) | -37.2 C (-35.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1924 | 12 |
| 1925 | 18 |
| 1926 | 16 |
| 1927 | 15 |
| 1928 | 12 |
| 1929 | 13 |
| 1930 | 26 |
| 1931 | 21 |
| 1932 | 27 |
| 1933 | 18 |
| 1934 | 33 |
| 1935 | 27 |
| 1936 | 41 |
| 1937 | 20 |
| 1938 | 10 |
| 1939 | 17 |
| 1940 | 11 |
| 1941 | 6 |
| 1942 | 14 |
| 1943 | 27 |
| 1944 | 11 |
| 1945 | 16 |
| 1946 | 4 |
| 1947 | 11 |
| 1948 | 6 |
| 1949 | 20 |
| 1950 | 33 |
| 1951 | 21 |
| 1952 | 16 |
| 1953 | 14 |
| 1954 | 27 |
| 1955 | 12 |
| 1956 | 9 |
| 1957 | 7 |
| 1958 | 17 |
| 1959 | 9 |
| 1960 | 14 |
| 1961 | 7 |
| 1962 | 19 |
| 1963 | 8 |
| 1964 | 5 |
| 1965 | 29 |
| 1966 | 10 |
| 1967 | 11 |
| 1968 | 10 |
| 1969 | 15 |
| 1970 | 11 |
| 1971 | 7 |
| 1972 | 25 |
| 1973 | 11 |
| 1974 | 5 |
| 1975 | 8 |
| 1976 | 4 |
| 1977 | 5 |
| 1978 | 9 |
| 1979 | 9 |
| 1980 | 15 |
| 1981 | 12 |
| 1982 | 4 |
| 1983 | 13 |
| 1984 | 10 |
| 1985 | 31 |
| 1986 | 23 |
| 1987 | 24 |
| 1988 | 26 |
| 1989 | 19 |
| 1990 | 20 |
| 1991 | 3 |
| 1992 | 25 |
| 1993 | 11 |
| 1994 | 13 |
| 1995 | 10 |
| 1996 | 16 |
| 1997 | 9 |
| 1998 | 8 |
| 1999 | 13 |
| 2000 | 10 |
| 2001 | 6 |
| 2002 | 11 |
| 2003 | 19 |
| 2004 | 6 |
| 2005 | 7 |
| 2006 | 9 |
| 2007 | 5 |
| 2008 | 7 |
| 2009 | 21 |
| 2010 | 16 |
| 2011 | 4 |
| 2012 | 24 |
| 2013 | 14 |
| 2014 | 12 |
| 2015 | 14 |
| 2016 | 8 |
| 2017 | 10 |
| 2018 | 11 |
| 2019 | 15 |
| 2020 | 15 |
| 2021 | 9 |
| 2022 | 18 |
| 2023 | 12 |
| 2024 | 10 |
| 2025 | 8 |
| 2026 | 19 |
All-Time Record Progression
5 new records| Date | Kind | Detail |
|---|---|---|
| 1958-04-23 | Record daily snowfall | Record daily snowfall 109.2 cm (43.0 in) |
| 1989-02-02 | Record low maximum temperature | Record low maximum temperature -32.2 C (-26.0 F) |
| 1989-02-02 | Record low minimum temperature | Record low minimum temperature -38.9 C (-38.0 F) |
| 1991-04-14 | Record snow depth | Record snow depth 160.0 cm (63.0 in) |
| 2026-07-13 | Record high maximum temperature | Record high maximum temperature 35.0 C (95.0 F) |
Wettest Day of Each Month
Mar: 101.6 mm (4.0 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 37.8 mm (1.5 in) | 14 January 1928 |
| Feb | 38.1 mm (1.5 in) | 9 February 1934 |
| Mar | 101.6 mm (4.0 in) | 24 March 1945 |
| Apr | 94.0 mm (3.7 in) | 6 April 1925 |
| May | 83.8 mm (3.3 in) | 7 May 1988 |
| Jun | 57.7 mm (2.3 in) | 1 June 1936 |
| Jul | 43.7 mm (1.7 in) | 6 July 1994 |
| Aug | 59.2 mm (2.3 in) | 31 August 1943 |
| Sep | 54.6 mm (2.1 in) | 22 September 2017 |
| Oct | 76.5 mm (3.0 in) | 31 October 1974 |
| Nov | 44.2 mm (1.7 in) | 8 November 1927 |
| Dec | 38.9 mm (1.5 in) | 22 December 2025 |
Period of Record Coverage
1924 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1924 | 152 | 42% | No |
| 1925 | 362 | 99% | Yes |
| 1926 | 365 | 100% | Yes |
| 1927 | 364 | 100% | Yes |
| 1928 | 364 | 99% | Yes |
| 1929 | 364 | 100% | Yes |
| 1930 | 364 | 100% | Yes |
| 1931 | 361 | 99% | Yes |
| 1932 | 365 | 100% | Yes |
| 1933 | 360 | 99% | Yes |
| 1934 | 365 | 100% | Yes |
| 1935 | 365 | 100% | Yes |
| 1936 | 365 | 100% | Yes |
| 1937 | 364 | 100% | Yes |
| 1938 | 365 | 100% | Yes |
| 1939 | 362 | 99% | Yes |
| 1940 | 336 | 92% | Yes |
| 1941 | 365 | 100% | Yes |
| 1942 | 365 | 100% | Yes |
| 1943 | 365 | 100% | Yes |
| 1944 | 366 | 100% | Yes |
| 1945 | 348 | 95% | Yes |
| 1946 | 364 | 100% | Yes |
| 1947 | 364 | 100% | Yes |
| 1948 | 365 | 100% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 364 | 100% | Yes |
| 1952 | 364 | 99% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 362 | 99% | Yes |
| 1955 | 362 | 99% | Yes |
| 1956 | 364 | 99% | Yes |
| 1957 | 362 | 99% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 357 | 98% | Yes |
| 1961 | 363 | 99% | Yes |
| 1962 | 362 | 99% | Yes |
| 1963 | 363 | 99% | Yes |
| 1964 | 365 | 100% | Yes |
| 1965 | 363 | 99% | Yes |
| 1966 | 364 | 100% | Yes |
| 1967 | 364 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 364 | 100% | Yes |
| 1972 | 363 | 99% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 364 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 364 | 100% | Yes |
| 1978 | 364 | 100% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 364 | 100% | Yes |
| 1982 | 356 | 98% | Yes |
| 1983 | 363 | 99% | Yes |
| 1984 | 360 | 98% | Yes |
| 1985 | 361 | 99% | Yes |
| 1986 | 359 | 98% | Yes |
| 1987 | 364 | 100% | Yes |
| 1988 | 365 | 100% | Yes |
| 1989 | 363 | 99% | Yes |
| 1990 | 360 | 99% | Yes |
| 1991 | 360 | 99% | Yes |
| 1992 | 363 | 99% | Yes |
| 1993 | 362 | 99% | Yes |
| 1994 | 361 | 99% | Yes |
| 1995 | 362 | 99% | Yes |
| 1996 | 362 | 99% | Yes |
| 1997 | 363 | 99% | Yes |
| 1998 | 364 | 100% | Yes |
| 1999 | 348 | 95% | Yes |
| 2000 | 363 | 99% | Yes |
| 2001 | 363 | 99% | Yes |
| 2002 | 362 | 99% | Yes |
| 2003 | 350 | 96% | Yes |
| 2004 | 362 | 99% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 269 | 74% | No |
| 2008 | 363 | 99% | Yes |
| 2009 | 359 | 98% | Yes |
| 2010 | 363 | 99% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 365 | 100% | Yes |
| 2014 | 363 | 99% | Yes |
| 2015 | 364 | 100% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 360 | 98% | Yes |
| 2021 | 364 | 100% | Yes |
| 2022 | 347 | 95% | Yes |
| 2023 | 364 | 100% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 364 | 100% | Yes |
| 2026 | 275 | 75% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 6 October 2026 | Mystic Lake, US | daily high max (Provisional) | 25.0 C (77.0 F) | 1.7 C (3.1 F) | 84 years | 37 of 100 (Notable) |
| 5 October 2026 | Mystic Lake, US | daily high max (Provisional) | 24.4 C (75.9 F) | 1.1 C (2.0 F) | 93 years | 39 of 100 (Notable) |
| 24 August 2026 | Mystic Lake, US | daily rain (Provisional) | 11.9 mm (0.5 in) | 0.5 mm (0.02 in) | 39 years | 20 of 100 (Routine) |
| 4 August 2026 | Mystic Lake, US | daily low max | 17.2 C (63.0 F) | 0.6 C (1.1 F) | 89 years | 37 of 100 (Notable) |
| 4 August 2026 | Mystic Lake, US | daily low min (Tie) | 4.4 C (39.9 F) | tie | 13 years | 3 of 100 (Routine) |
| 2 August 2026 | Mystic Lake, US | daily high max | 32.2 C (90.0 F) | 2.8 C (5.0 F) | 56 years | 33 of 100 (Routine) |
| 1 August 2026 | Mystic Lake, US | daily high max | 32.2 C (90.0 F) | 1.6 C (2.9 F) | 83 years | 37 of 100 (Notable) |
| 13 July 2026 | Mystic Lake, US | all-time high max | 35.0 C (95.0 F) | 0.6 C (1.1 F) | 94 years | 59 of 100 (Notable) |
| 12 July 2026 | Mystic Lake, US | all-time high max (Tie) | 34.4 C (93.9 F) | tie | 94 years | 14 of 100 (Routine) |
| 11 July 2026 | Mystic Lake, US | daily high max | 32.2 C (90.0 F) | 1.1 C (2.0 F) | 87 years | 38 of 100 (Notable) |
| 18 May 2026 | Mystic Lake, US | daily low max (Tie) | 2.2 C (36.0 F) | tie | 8 years | 3 of 100 (Routine) |
| 13 May 2026 | Mystic Lake, US | daily high max | 26.1 C (79.0 F) | 1.1 C (2.0 F) | 24 years | 18 of 100 (Routine) |
| 11 May 2026 | Mystic Lake, US | daily high min | 11.1 C (52.0 F) | 0.5 C (0.9 F) | 85 years | 36 of 100 (Notable) |
| 25 April 2026 | Mystic Lake, US | daily low max | 0.6 C (33.1 F) | 0.5 C (0.9 F) | 65 years | 29 of 100 (Routine) |
| 28 March 2026 | Mystic Lake, US | daily high min (Tie) | 8.9 C (48.0 F) | tie | 40 years | 5 of 100 (Routine) |
| 25 March 2026 | Mystic Lake, US | daily high min | 7.8 C (46.0 F) | 1.7 C (3.1 F) | 87 years | 38 of 100 (Notable) |
| 21 March 2026 | Mystic Lake, US | monthly high min | 14.4 C (57.9 F) | 3.8 C (6.8 F) | 32 years | 34 of 100 (Routine) |
| 21 March 2026 | Mystic Lake, US | monthly high max (Tie) | 18.9 C (66.0 F) | tie | 0 years | 5 of 100 (Routine) |
| 20 March 2026 | Mystic Lake, US | monthly high max | 18.9 C (66.0 F) | 0.6 C (1.1 F) | 47 years | 35 of 100 (Notable) |
| 20 March 2026 | Mystic Lake, US | daily high min (Tie) | 9.4 C (48.9 F) | tie | 28 years | 4 of 100 (Routine) |
Climate Trend
96 complete years, 1925 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1925 | 5.6 C | -0.04 C |
| 1926 | 6.1 C | +0.46 C |
| 1927 | 4.1 C | -1.51 C |
| 1928 | 5.4 C | -0.19 C |
| 1929 | 4.6 C | -1.03 C |
| 1930 | 5.3 C | -0.33 C |
| 1931 | 6.4 C | +0.78 C |
| 1932 | 4.8 C | -0.84 C |
| 1933 | 6.1 C | +0.46 C |
| 1934 | 7.6 C | +1.97 C |
| 1935 | 5.7 C | +0.12 C |
| 1936 | 5.8 C | +0.18 C |
| 1937 | 4.8 C | -0.80 C |
| 1938 | 6.1 C | +0.44 C |
| 1939 | 6.7 C | +1.12 C |
| 1941 | 6.0 C | +0.43 C |
| 1942 | 5.0 C | -0.59 C |
| 1943 | 6.0 C | +0.34 C |
| 1946 | 5.5 C | -0.11 C |
| 1947 | 5.4 C | -0.25 C |
| 1948 | 4.6 C | -0.99 C |
| 1949 | 5.0 C | -0.59 C |
| 1950 | 4.0 C | -1.59 C |
| 1951 | 3.5 C | -2.11 C |
| 1952 | 5.9 C | +0.26 C |
| 1953 | 5.8 C | +0.17 C |
| 1954 | 6.1 C | +0.47 C |
| 1955 | 4.0 C | -1.66 C |
| 1956 | 5.5 C | -0.15 C |
| 1957 | 4.7 C | -0.90 C |
| 1958 | 6.1 C | +0.44 C |
| 1959 | 5.2 C | -0.43 C |
| 1960 | 5.4 C | -0.19 C |
| 1961 | 5.9 C | +0.26 C |
| 1962 | 5.6 C | -0.06 C |
| 1963 | 6.2 C | +0.54 C |
| 1964 | 5.1 C | -0.56 C |
| 1965 | 5.0 C | -0.57 C |
| 1966 | 6.0 C | +0.40 C |
| 1967 | 5.2 C | -0.37 C |
| 1968 | 5.1 C | -0.49 C |
| 1969 | 5.8 C | +0.22 C |
| 1970 | 5.2 C | -0.43 C |
| 1971 | 4.7 C | -0.88 C |
| 1972 | 4.6 C | -1.03 C |
| 1973 | 5.3 C | -0.36 C |
| 1974 | 5.6 C | -0.05 C |
| 1975 | 4.2 C | -1.37 C |
| 1976 | 6.1 C | +0.50 C |
| 1977 | 5.9 C | +0.29 C |
| 1978 | 5.0 C | -0.62 C |
| 1979 | 5.4 C | -0.20 C |
| 1980 | 5.7 C | +0.08 C |
| 1981 | 6.7 C | +1.11 C |
| 1982 | 4.7 C | -0.89 C |
| 1983 | 5.8 C | +0.21 C |
| 1984 | 5.6 C | -0.01 C |
| 1985 | 5.1 C | -0.53 C |
| 1986 | 6.8 C | +1.14 C |
| 1987 | 7.3 C | +1.67 C |
| 1988 | 7.4 C | +1.75 C |
| 1989 | 5.6 C | -0.02 C |
| 1990 | 6.4 C | +0.75 C |
| 1991 | 6.5 C | +0.85 C |
| 1992 | 6.7 C | +1.10 C |
| 1993 | 5.1 C | -0.56 C |
| 1994 | 6.6 C | +0.97 C |
| 1995 | 5.7 C | +0.05 C |
| 1996 | 5.2 C | -0.38 C |
| 1997 | 5.9 C | +0.28 C |
| 1998 | 6.6 C | +0.98 C |
| 1999 | 6.9 C | +1.29 C |
| 2000 | 6.1 C | +0.51 C |
| 2001 | 6.7 C | +1.06 C |
| 2002 | 5.0 C | -0.66 C |
| 2004 | 6.1 C | +0.51 C |
| 2005 | 6.2 C | +0.54 C |
| 2006 | 6.7 C | +1.05 C |
| 2008 | 4.9 C | -0.75 C |
| 2009 | 4.8 C | -0.86 C |
| 2010 | 5.6 C | -0.04 C |
| 2011 | 5.2 C | -0.43 C |
| 2012 | 6.2 C | +0.56 C |
| 2013 | 5.2 C | -0.39 C |
| 2014 | 4.6 C | -1.01 C |
| 2015 | 6.5 C | +0.89 C |
| 2016 | 6.3 C | +0.68 C |
| 2017 | 5.5 C | -0.15 C |
| 2018 | 4.8 C | -0.86 C |
| 2019 | 3.6 C | -1.97 C |
| 2020 | 5.9 C | +0.25 C |
| 2021 | 6.2 C | +0.57 C |
| 2022 | 5.0 C | -0.59 C |
| 2023 | 6.0 C | +0.35 C |
| 2024 | 7.1 C | +1.44 C |
| 2025 | 6.6 C | +0.99 C |
The fitted trend in annual mean temperature here over 1925 to 2025 is 0.05 C (-0.01 to 0.10) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.09 F (-0.01 to 0.19) per decade. The slope is a straight line fitted to 96 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.05 C (-0.01 to 0.10) per decade | 0.09 F (-0.01 to 0.19) per decade | 1925 to 2025 | 96 | Not clearly different from zero |
| Mean daily maximum | 0.01 C (-0.05 to 0.07) per decade | 0.02 F (-0.09 to 0.13) per decade | 1925 to 2025 | 96 | Not clearly different from zero |
| Mean daily minimum | 0.09 C (0.03 to 0.14) per decade | 0.15 F (0.05 to 0.26) per decade | 1925 to 2025 | 96 | Rise |
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1924 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 35.0 C (95.0 F) | 2026 | 30.6 C (87.1 F) | 103 |
| Coldest night (TNn) | -38.9 C (-38.0 F) | 1989 | -28.9 C (-20.0 F) | 103 |
| Wettest day (Rx1day) | 101.6 mm (4.0 in) | 1945 | 38.1 mm (1.5 in) | 103 |
| Wettest five days (Rx5day) | 152.1 mm (6.0 in) | 1958 | 61.0 mm (2.4 in) | 103 |
| Longest dry spell (CDD) | 48 days | 1934 | 21 days | 103 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1924 | 32.2 C (90.0 F) |
| 1925 | 32.2 C (90.0 F) |
| 1926 | 30.6 C (87.1 F) |
| 1927 | 27.8 C (82.0 F) |
| 1928 | 29.4 C (84.9 F) |
| 1929 | 30.6 C (87.1 F) |
| 1930 | 30.6 C (87.1 F) |
| 1931 | 34.4 C (93.9 F) |
| 1932 | 31.7 C (89.1 F) |
| 1933 | 32.8 C (91.0 F) |
| 1934 | 31.1 C (88.0 F) |
| 1935 | 32.8 C (91.0 F) |
| 1936 | 32.2 C (90.0 F) |
| 1937 | 31.1 C (88.0 F) |
| 1938 | 28.9 C (84.0 F) |
| 1939 | 32.2 C (90.0 F) |
| 1940 | 31.7 C (89.1 F) |
| 1941 | 30.6 C (87.1 F) |
| 1942 | 32.2 C (90.0 F) |
| 1943 | 31.1 C (88.0 F) |
| 1944 | 28.9 C (84.0 F) |
| 1945 | 30.6 C (87.1 F) |
| 1946 | 30.0 C (86.0 F) |
| 1947 | 29.4 C (84.9 F) |
| 1948 | 28.9 C (84.0 F) |
| 1949 | 32.2 C (90.0 F) |
| 1950 | 31.1 C (88.0 F) |
| 1951 | 30.0 C (86.0 F) |
| 1952 | 28.3 C (82.9 F) |
| 1953 | 30.6 C (87.1 F) |
| 1954 | 33.3 C (91.9 F) |
| 1955 | 31.1 C (88.0 F) |
| 1956 | 30.6 C (87.1 F) |
| 1957 | 30.0 C (86.0 F) |
| 1958 | 30.0 C (86.0 F) |
| 1959 | 30.0 C (86.0 F) |
| 1960 | 30.6 C (87.1 F) |
| 1961 | 32.8 C (91.0 F) |
| 1962 | 29.4 C (84.9 F) |
| 1963 | 30.6 C (87.1 F) |
| 1964 | 29.4 C (84.9 F) |
| 1965 | 28.3 C (82.9 F) |
| 1966 | 30.0 C (86.0 F) |
| 1967 | 28.3 C (82.9 F) |
| 1968 | 28.9 C (84.0 F) |
| 1969 | 31.7 C (89.1 F) |
| 1970 | 30.0 C (86.0 F) |
| 1971 | 30.6 C (87.1 F) |
| 1972 | 28.3 C (82.9 F) |
| 1973 | 31.1 C (88.0 F) |
| 1974 | 28.9 C (84.0 F) |
| 1975 | 29.4 C (84.9 F) |
| 1976 | 30.6 C (87.1 F) |
| 1977 | 29.4 C (84.9 F) |
| 1978 | 29.4 C (84.9 F) |
| 1979 | 31.7 C (89.1 F) |
| 1980 | 29.4 C (84.9 F) |
| 1981 | 30.6 C (87.1 F) |
| 1982 | 30.0 C (86.0 F) |
| 1983 | 30.6 C (87.1 F) |
| 1984 | 30.0 C (86.0 F) |
| 1985 | 31.1 C (88.0 F) |
| 1986 | 30.0 C (86.0 F) |
| 1987 | 29.4 C (84.9 F) |
| 1988 | 31.7 C (89.1 F) |
| 1989 | 32.2 C (90.0 F) |
| 1990 | 32.8 C (91.0 F) |
| 1991 | 31.1 C (88.0 F) |
| 1992 | 28.9 C (84.0 F) |
| 1993 | 30.0 C (86.0 F) |
| 1994 | 28.9 C (84.0 F) |
| 1995 | 30.6 C (87.1 F) |
| 1996 | 31.1 C (88.0 F) |
| 1997 | 29.4 C (84.9 F) |
| 1998 | 30.6 C (87.1 F) |
| 1999 | 29.4 C (84.9 F) |
| 2000 | 30.6 C (87.1 F) |
| 2001 | 30.0 C (86.0 F) |
| 2002 | 32.2 C (90.0 F) |
| 2003 | 32.8 C (91.0 F) |
| 2004 | 27.8 C (82.0 F) |
| 2005 | 31.7 C (89.1 F) |
| 2006 | 31.7 C (89.1 F) |
| 2007 | 33.9 C (93.0 F) |
| 2008 | 29.4 C (84.9 F) |
| 2009 | 27.2 C (81.0 F) |
| 2010 | 30.0 C (86.0 F) |
| 2011 | 30.0 C (86.0 F) |
| 2012 | 30.6 C (87.1 F) |
| 2013 | 29.4 C (84.9 F) |
| 2014 | 27.8 C (82.0 F) |
| 2015 | 28.9 C (84.0 F) |
| 2016 | 30.6 C (87.1 F) |
| 2017 | 30.0 C (86.0 F) |
| 2018 | 32.8 C (91.0 F) |
| 2019 | 28.3 C (82.9 F) |
| 2020 | 29.4 C (84.9 F) |
| 2021 | 31.1 C (88.0 F) |
| 2022 | 31.1 C (88.0 F) |
| 2023 | 30.0 C (86.0 F) |
| 2024 | 31.1 C (88.0 F) |
| 2025 | 30.0 C (86.0 F) |
| 2026 | 35.0 C (95.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1924 | -37.2 C (-35.0 F) |
| 1925 | -21.7 C (-7.1 F) |
| 1926 | -30.6 C (-23.1 F) |
| 1927 | -34.4 C (-29.9 F) |
| 1928 | -28.9 C (-20.0 F) |
| 1929 | -31.7 C (-25.1 F) |
| 1930 | -35.0 C (-31.0 F) |
| 1931 | -26.1 C (-15.0 F) |
| 1932 | -35.0 C (-31.0 F) |
| 1933 | -36.1 C (-33.0 F) |
| 1934 | -25.6 C (-14.1 F) |
| 1935 | -37.2 C (-35.0 F) |
| 1936 | -38.3 C (-36.9 F) |
| 1937 | -33.3 C (-27.9 F) |
| 1938 | -30.6 C (-23.1 F) |
| 1939 | -36.1 C (-33.0 F) |
| 1940 | -26.7 C (-16.1 F) |
| 1941 | -28.9 C (-20.0 F) |
| 1942 | -28.9 C (-20.0 F) |
| 1943 | -36.7 C (-34.1 F) |
| 1944 | -25.0 C (-13.0 F) |
| 1945 | -29.4 C (-20.9 F) |
| 1946 | -23.9 C (-11.0 F) |
| 1947 | -26.7 C (-16.1 F) |
| 1948 | -28.3 C (-18.9 F) |
| 1949 | -31.1 C (-24.0 F) |
| 1950 | -33.3 C (-27.9 F) |
| 1951 | -32.2 C (-26.0 F) |
| 1952 | -30.6 C (-23.1 F) |
| 1953 | -20.0 C (-4.0 F) |
| 1954 | -30.6 C (-23.1 F) |
| 1955 | -27.8 C (-18.0 F) |
| 1956 | -29.4 C (-20.9 F) |
| 1957 | -30.0 C (-22.0 F) |
| 1958 | -24.4 C (-11.9 F) |
| 1959 | -31.1 C (-24.0 F) |
| 1960 | -30.0 C (-22.0 F) |
| 1961 | -28.9 C (-20.0 F) |
| 1962 | -31.1 C (-24.0 F) |
| 1963 | -36.1 C (-33.0 F) |
| 1964 | -32.8 C (-27.0 F) |
| 1965 | -28.9 C (-20.0 F) |
| 1966 | -26.7 C (-16.1 F) |
| 1967 | -25.6 C (-14.1 F) |
| 1968 | -32.2 C (-26.0 F) |
| 1969 | -27.8 C (-18.0 F) |
| 1970 | -25.0 C (-13.0 F) |
| 1971 | -25.6 C (-14.1 F) |
| 1972 | -33.9 C (-29.0 F) |
| 1973 | -29.4 C (-20.9 F) |
| 1974 | -27.2 C (-17.0 F) |
| 1975 | -28.3 C (-18.9 F) |
| 1976 | -25.6 C (-14.1 F) |
| 1977 | -24.4 C (-11.9 F) |
| 1978 | -31.1 C (-24.0 F) |
| 1979 | -25.6 C (-14.1 F) |
| 1980 | -29.4 C (-20.9 F) |
| 1981 | -32.2 C (-26.0 F) |
| 1982 | -29.4 C (-20.9 F) |
| 1983 | -36.1 C (-33.0 F) |
| 1984 | -27.2 C (-17.0 F) |
| 1985 | -27.8 C (-18.0 F) |
| 1986 | -25.6 C (-14.1 F) |
| 1987 | -21.7 C (-7.1 F) |
| 1988 | -26.1 C (-15.0 F) |
| 1989 | -38.9 C (-38.0 F) |
| 1990 | -37.2 C (-35.0 F) |
| 1991 | -26.7 C (-16.1 F) |
| 1992 | -29.4 C (-20.9 F) |
| 1993 | -26.7 C (-16.1 F) |
| 1994 | -28.9 C (-20.0 F) |
| 1995 | -26.1 C (-15.0 F) |
| 1996 | -30.0 C (-22.0 F) |
| 1997 | -31.7 C (-25.1 F) |
| 1998 | -31.1 C (-24.0 F) |
| 1999 | -18.9 C (-2.0 F) |
| 2000 | -25.6 C (-14.1 F) |
| 2001 | -22.8 C (-9.0 F) |
| 2002 | -23.3 C (-9.9 F) |
| 2003 | -26.1 C (-15.0 F) |
| 2004 | -28.3 C (-18.9 F) |
| 2005 | -23.9 C (-11.0 F) |
| 2006 | -31.7 C (-25.1 F) |
| 2007 | -26.7 C (-16.1 F) |
| 2008 | -30.0 C (-22.0 F) |
| 2009 | -28.3 C (-18.9 F) |
| 2010 | -25.6 C (-14.1 F) |
| 2011 | -26.7 C (-16.1 F) |
| 2012 | -21.7 C (-7.1 F) |
| 2013 | -30.0 C (-22.0 F) |
| 2014 | -30.6 C (-23.1 F) |
| 2015 | -21.7 C (-7.1 F) |
| 2016 | -33.9 C (-29.0 F) |
| 2017 | -29.4 C (-20.9 F) |
| 2018 | -27.2 C (-17.0 F) |
| 2019 | -28.9 C (-20.0 F) |
| 2020 | -23.9 C (-11.0 F) |
| 2021 | -30.0 C (-22.0 F) |
| 2022 | -38.9 C (-38.0 F) |
| 2023 | -29.4 C (-20.9 F) |
| 2024 | -33.9 C (-29.0 F) |
| 2025 | -25.0 C (-13.0 F) |
| 2026 | -21.1 C (-6.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1924 | 21.1 mm (0.8 in) |
| 1925 | 94.0 mm (3.7 in) |
| 1926 | 40.1 mm (1.6 in) |
| 1927 | 44.2 mm (1.7 in) |
| 1928 | 43.4 mm (1.7 in) |
| 1929 | 45.2 mm (1.8 in) |
| 1930 | 33.5 mm (1.3 in) |
| 1931 | 42.2 mm (1.7 in) |
| 1932 | 48.0 mm (1.9 in) |
| 1933 | 58.4 mm (2.3 in) |
| 1934 | 38.1 mm (1.5 in) |
| 1935 | 38.9 mm (1.5 in) |
| 1936 | 57.7 mm (2.3 in) |
| 1937 | 32.8 mm (1.3 in) |
| 1938 | 34.0 mm (1.3 in) |
| 1939 | 29.7 mm (1.2 in) |
| 1940 | 29.7 mm (1.2 in) |
| 1941 | 45.2 mm (1.8 in) |
| 1942 | 26.9 mm (1.1 in) |
| 1943 | 71.1 mm (2.8 in) |
| 1944 | 50.8 mm (2.0 in) |
| 1945 | 101.6 mm (4.0 in) |
| 1946 | 28.4 mm (1.1 in) |
| 1947 | 45.7 mm (1.8 in) |
| 1948 | 35.3 mm (1.4 in) |
| 1949 | 41.7 mm (1.6 in) |
| 1950 | 37.3 mm (1.5 in) |
| 1951 | 42.4 mm (1.7 in) |
| 1952 | 41.1 mm (1.6 in) |
| 1953 | 31.5 mm (1.2 in) |
| 1954 | 22.9 mm (0.9 in) |
| 1955 | 34.5 mm (1.4 in) |
| 1956 | 43.7 mm (1.7 in) |
| 1957 | 68.6 mm (2.7 in) |
| 1958 | 88.9 mm (3.5 in) |
| 1959 | 38.9 mm (1.5 in) |
| 1960 | 21.6 mm (0.9 in) |
| 1961 | 29.7 mm (1.2 in) |
| 1962 | 51.1 mm (2.0 in) |
| 1963 | 37.6 mm (1.5 in) |
| 1964 | 43.2 mm (1.7 in) |
| 1965 | 22.6 mm (0.9 in) |
| 1966 | 47.2 mm (1.9 in) |
| 1967 | 37.6 mm (1.5 in) |
| 1968 | 26.7 mm (1.1 in) |
| 1969 | 30.7 mm (1.2 in) |
| 1970 | 51.8 mm (2.0 in) |
| 1971 | 66.8 mm (2.6 in) |
| 1972 | 35.6 mm (1.4 in) |
| 1973 | 36.6 mm (1.4 in) |
| 1974 | 76.5 mm (3.0 in) |
| 1975 | 50.8 mm (2.0 in) |
| 1976 | 28.2 mm (1.1 in) |
| 1977 | 26.7 mm (1.1 in) |
| 1978 | 40.6 mm (1.6 in) |
| 1979 | 38.1 mm (1.5 in) |
| 1980 | 74.7 mm (2.9 in) |
| 1981 | 27.4 mm (1.1 in) |
| 1982 | 24.4 mm (1.0 in) |
| 1983 | 31.5 mm (1.2 in) |
| 1984 | 22.9 mm (0.9 in) |
| 1985 | 19.3 mm (0.8 in) |
| 1986 | 26.7 mm (1.1 in) |
| 1987 | 49.5 mm (1.9 in) |
| 1988 | 83.8 mm (3.3 in) |
| 1989 | 30.5 mm (1.2 in) |
| 1990 | 38.4 mm (1.5 in) |
| 1991 | 29.0 mm (1.1 in) |
| 1992 | 45.0 mm (1.8 in) |
| 1993 | 37.8 mm (1.5 in) |
| 1994 | 43.7 mm (1.7 in) |
| 1995 | 26.4 mm (1.0 in) |
| 1996 | 35.3 mm (1.4 in) |
| 1997 | 40.9 mm (1.6 in) |
| 1998 | 20.6 mm (0.8 in) |
| 1999 | 39.9 mm (1.6 in) |
| 2000 | 68.6 mm (2.7 in) |
| 2001 | 53.3 mm (2.1 in) |
| 2002 | 28.7 mm (1.1 in) |
| 2003 | 35.6 mm (1.4 in) |
| 2004 | 42.9 mm (1.7 in) |
| 2005 | 63.0 mm (2.5 in) |
| 2006 | 28.2 mm (1.1 in) |
| 2007 | 38.6 mm (1.5 in) |
| 2008 | 29.7 mm (1.2 in) |
| 2009 | 29.2 mm (1.1 in) |
| 2010 | 38.1 mm (1.5 in) |
| 2011 | 25.4 mm (1.0 in) |
| 2012 | 25.7 mm (1.0 in) |
| 2013 | 40.6 mm (1.6 in) |
| 2014 | 33.8 mm (1.3 in) |
| 2015 | 30.5 mm (1.2 in) |
| 2016 | 31.0 mm (1.2 in) |
| 2017 | 74.9 mm (2.9 in) |
| 2018 | 30.5 mm (1.2 in) |
| 2019 | 42.4 mm (1.7 in) |
| 2020 | 26.7 mm (1.1 in) |
| 2021 | 20.8 mm (0.8 in) |
| 2022 | 77.0 mm (3.0 in) |
| 2023 | 43.4 mm (1.7 in) |
| 2024 | 36.8 mm (1.4 in) |
| 2025 | 38.9 mm (1.5 in) |
| 2026 | 26.7 mm (1.1 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1924 | 35.5 mm (1.4 in) |
| 1925 | 95.5 mm (3.8 in) |
| 1926 | 63.4 mm (2.5 in) |
| 1927 | 94.7 mm (3.7 in) |
| 1928 | 61.6 mm (2.4 in) |
| 1929 | 54.4 mm (2.1 in) |
| 1930 | 55.4 mm (2.2 in) |
| 1931 | 56.9 mm (2.2 in) |
| 1932 | 74.1 mm (2.9 in) |
| 1933 | 83.1 mm (3.3 in) |
| 1934 | 65.8 mm (2.6 in) |
| 1935 | 66.9 mm (2.6 in) |
| 1936 | 92.5 mm (3.6 in) |
| 1937 | 72.7 mm (2.9 in) |
| 1938 | 67.1 mm (2.6 in) |
| 1939 | 48.0 mm (1.9 in) |
| 1940 | 42.9 mm (1.7 in) |
| 1941 | 65.9 mm (2.6 in) |
| 1942 | 72.6 mm (2.9 in) |
| 1943 | 104.7 mm (4.1 in) |
| 1944 | 95.8 mm (3.8 in) |
| 1945 | 117.3 mm (4.6 in) |
| 1946 | 50.5 mm (2.0 in) |
| 1947 | 59.7 mm (2.4 in) |
| 1948 | 65.3 mm (2.6 in) |
| 1949 | 58.0 mm (2.3 in) |
| 1950 | 49.5 mm (1.9 in) |
| 1951 | 54.6 mm (2.1 in) |
| 1952 | 74.7 mm (2.9 in) |
| 1953 | 57.1 mm (2.2 in) |
| 1954 | 38.6 mm (1.5 in) |
| 1955 | 80.5 mm (3.2 in) |
| 1956 | 52.1 mm (2.1 in) |
| 1957 | 127.0 mm (5.0 in) |
| 1958 | 152.1 mm (6.0 in) |
| 1959 | 52.4 mm (2.1 in) |
| 1960 | 36.3 mm (1.4 in) |
| 1961 | 61.0 mm (2.4 in) |
| 1962 | 70.7 mm (2.8 in) |
| 1963 | 71.1 mm (2.8 in) |
| 1964 | 72.7 mm (2.9 in) |
| 1965 | 48.9 mm (1.9 in) |
| 1966 | 65.9 mm (2.6 in) |
| 1967 | 99.9 mm (3.9 in) |
| 1968 | 57.4 mm (2.3 in) |
| 1969 | 79.5 mm (3.1 in) |
| 1970 | 65.6 mm (2.6 in) |
| 1971 | 139.9 mm (5.5 in) |
| 1972 | 48.8 mm (1.9 in) |
| 1973 | 42.4 mm (1.7 in) |
| 1974 | 112.3 mm (4.4 in) |
| 1975 | 71.7 mm (2.8 in) |
| 1976 | 46.3 mm (1.8 in) |
| 1977 | 44.0 mm (1.7 in) |
| 1978 | 86.4 mm (3.4 in) |
| 1979 | 55.9 mm (2.2 in) |
| 1980 | 87.1 mm (3.4 in) |
| 1981 | 48.8 mm (1.9 in) |
| 1982 | 51.5 mm (2.0 in) |
| 1983 | 51.9 mm (2.0 in) |
| 1984 | 54.4 mm (2.1 in) |
| 1985 | 34.8 mm (1.4 in) |
| 1986 | 61.5 mm (2.4 in) |
| 1987 | 75.2 mm (3.0 in) |
| 1988 | 101.6 mm (4.0 in) |
| 1989 | 54.6 mm (2.1 in) |
| 1990 | 49.1 mm (1.9 in) |
| 1991 | 62.9 mm (2.5 in) |
| 1992 | 113.1 mm (4.5 in) |
| 1993 | 65.0 mm (2.6 in) |
| 1994 | 70.3 mm (2.8 in) |
| 1995 | 51.9 mm (2.0 in) |
| 1996 | 57.4 mm (2.3 in) |
| 1997 | 60.5 mm (2.4 in) |
| 1998 | 52.3 mm (2.1 in) |
| 1999 | 55.2 mm (2.2 in) |
| 2000 | 70.9 mm (2.8 in) |
| 2001 | 70.5 mm (2.8 in) |
| 2002 | 47.5 mm (1.9 in) |
| 2003 | 52.7 mm (2.1 in) |
| 2004 | 78.2 mm (3.1 in) |
| 2005 | 81.6 mm (3.2 in) |
| 2006 | 46.0 mm (1.8 in) |
| 2007 | 76.9 mm (3.0 in) |
| 2008 | 73.4 mm (2.9 in) |
| 2009 | 44.9 mm (1.8 in) |
| 2010 | 83.6 mm (3.3 in) |
| 2011 | 42.3 mm (1.7 in) |
| 2012 | 42.4 mm (1.7 in) |
| 2013 | 102.3 mm (4.0 in) |
| 2014 | 44.2 mm (1.7 in) |
| 2015 | 53.9 mm (2.1 in) |
| 2016 | 53.8 mm (2.1 in) |
| 2017 | 88.1 mm (3.5 in) |
| 2018 | 60.2 mm (2.4 in) |
| 2019 | 89.5 mm (3.5 in) |
| 2020 | 58.5 mm (2.3 in) |
| 2021 | 41.6 mm (1.6 in) |
| 2022 | 114.1 mm (4.5 in) |
| 2023 | 50.8 mm (2.0 in) |
| 2024 | 50.3 mm (2.0 in) |
| 2025 | 55.4 mm (2.2 in) |
| 2026 | 47.9 mm (1.9 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1924 | 15 days |
| 1925 | 17 days |
| 1926 | 14 days |
| 1927 | 22 days |
| 1928 | 9 days |
| 1929 | 19 days |
| 1930 | 42 days |
| 1931 | 24 days |
| 1932 | 20 days |
| 1933 | 27 days |
| 1934 | 48 days |
| 1935 | 24 days |
| 1936 | 27 days |
| 1937 | 26 days |
| 1938 | 12 days |
| 1939 | 40 days |
| 1940 | 15 days |
| 1941 | 20 days |
| 1942 | 19 days |
| 1943 | 18 days |
| 1944 | 19 days |
| 1945 | 20 days |
| 1946 | 23 days |
| 1947 | 22 days |
| 1948 | 16 days |
| 1949 | 33 days |
| 1950 | 21 days |
| 1951 | 14 days |
| 1952 | 32 days |
| 1953 | 18 days |
| 1954 | 40 days |
| 1955 | 20 days |
| 1956 | 17 days |
| 1957 | 18 days |
| 1958 | 18 days |
| 1959 | 26 days |
| 1960 | 21 days |
| 1961 | 17 days |
| 1962 | 16 days |
| 1963 | 30 days |
| 1964 | 18 days |
| 1965 | 22 days |
| 1966 | 20 days |
| 1967 | 15 days |
| 1968 | 20 days |
| 1969 | 24 days |
| 1970 | 26 days |
| 1971 | 14 days |
| 1972 | 16 days |
| 1973 | 29 days |
| 1974 | 15 days |
| 1975 | 19 days |
| 1976 | 32 days |
| 1977 | 28 days |
| 1978 | 28 days |
| 1979 | 18 days |
| 1980 | 23 days |
| 1981 | 24 days |
| 1982 | 12 days |
| 1983 | 22 days |
| 1984 | 15 days |
| 1985 | 23 days |
| 1986 | 23 days |
| 1987 | 32 days |
| 1988 | 27 days |
| 1989 | 17 days |
| 1990 | 19 days |
| 1991 | 18 days |
| 1992 | 25 days |
| 1993 | 18 days |
| 1994 | 23 days |
| 1995 | 13 days |
| 1996 | 26 days |
| 1997 | 11 days |
| 1998 | 20 days |
| 1999 | 20 days |
| 2000 | 22 days |
| 2001 | 23 days |
| 2002 | 23 days |
| 2003 | 22 days |
| 2004 | 21 days |
| 2005 | 21 days |
| 2006 | 28 days |
| 2007 | 27 days |
| 2008 | 16 days |
| 2009 | 21 days |
| 2010 | 21 days |
| 2011 | 18 days |
| 2012 | 21 days |
| 2013 | 14 days |
| 2014 | 13 days |
| 2015 | 16 days |
| 2016 | 21 days |
| 2017 | 29 days |
| 2018 | 24 days |
| 2019 | 23 days |
| 2020 | 18 days |
| 2021 | 17 days |
| 2022 | 12 days |
| 2023 | 16 days |
| 2024 | 28 days |
| 2025 | 12 days |
| 2026 | 31 days |
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Frost Dates and Growing Season
96 years with a frostAcross 96 years with a frost, the median last spring frost at Mystic Lake falls on 8 June and the median first autumn frost on 15 September, which leaves a median of 102 days between them.
In 1994 to 2025 the median growing season was 107 days. That is 13 days more than in 1925 to 1957.
Fitted over all years, the growing season changes by +2.6 days per decade at this station.
| Measure | Median, all years | Earliest period (1925 to 1957) | Recent period (1994 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 8 June | 9 June | 7 June | 2 days earlier | -0.7 days per decade |
| First autumn frost | 15 September | 14 September | 20 September | 6 days later | +1.9 days per decade |
| Growing days | 102 days | 94 days | 107 days | 13 days more | +2.6 days per decade |
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
95 years, 1925 to 2025A day with at least 37.1 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 109.8 mm (4.3 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 37.1 mm (1.5 in) | |
| 5 years | 51.3 mm (2.0 in) | |
| 10 years | 62.5 mm (2.5 in) | |
| 25 years | 79.1 mm (3.1 in) | |
| 50 years | 93.5 mm (3.7 in) | |
| 100 years | 109.8 mm (4.3 in) | Longer than the 95 years of record |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 95 years of values from 1925 to 2025.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 101.6 mm (4.0 in) in 1945; 94.0 mm (3.7 in) in 1925; 88.9 mm (3.5 in) in 1958.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Mystic Lake, at 1997. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1997 ran 0.2 C (0.4 F) lower than in the years before (possible change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1997 | -0.2 | -0.4 | possible | 5 |
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Climate Twins
2011 to 2025 against 1961 to 1990Over 2011 to 2025, Mystic Lake had a mean temperature of 5.6 C (42.1 F) and 687.0 mm (27.0 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Singo (Sweden, 7,400 km away), Kardla (Estonia, 7,701 km away) and Gavle (Sweden, 7,304 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Singo | Sweden | 7,400 km (4,598 mi) | 5.6 C (42.1 F) | 598.4 mm (23.6 in) | 1.22 |
| Kardla | Estonia | 7,701 km (4,785 mi) | 5.6 C (42.0 F) | 631.8 mm (24.9 in) | 1.29 |
| Gavle | Sweden | 7,304 km (4,538 mi) | 5.3 C (41.5 F) | 611.1 mm (24.1 in) | 1.40 |
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
Download the Data
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-16 (16 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-16).